I've fallen in love with vim and ViEmu, using it now with VS, Outlook, Word and SSMS.
There remains one text editing application that I spend an enormous amount of time in (more than anything except VS): OneNote. The syncing and sharing capabilities of OneNote 2010 are too powerful for me to seriously consider another option (most of my team uses OneNote anyway and I was one of the people that has been driving that for the last number of years ;-)  But ViEmu for OneNote would be absolutely fantastic.

Any thoughts on porting ViEmu for Word/Outlook to OneNote? Anyone else have an interest in this?